洪屏抽水蓄能电站渗控效果数值模拟与评价  

Numerical assessment of seepage control effects of Hongping pumped storage power station

作　　者：周斌[1] 刘斯宏[1] 姜忠见 胡伊玲 杨明山[1] 

机构地区：[1]河海大学水利水电学院,南京210098 [2]浙江省抽水蓄能工程技术研究中心,杭州310014

出　　处：《水力发电学报》2015年第5期131-139,共9页Journal of Hydroelectric Engineering

基　　金：江苏省普通高校研究生科研创新计划申报项目(2013B25314)

摘　　要：为合理评价洪屏抽水蓄能电站渗控效果,本文在建立库盆和地下厂房整体模型的基础上,提出一种以排水孔二次剖分技术和修正的结点虚流量法相结合的分析方法。该方法以排水孔二次剖分技术实现对排水孔等复杂渗控措施的模拟、以量化已知结点对过渡单元虚域部分的流量贡献来实现出渗点的精确求解、以逐步放宽过渡区范围实现对渗流自由面的准确定位,较为便捷地解决了含复杂渗控措施的渗流问题。同时,探讨地下水边界条件的添加方式,对类似工程的渗控优化具有指导意义。To evaluate the seepage-proof efficiency of the Hongping pumped storage power station, this paper presents an analytical method which integrates the secondary subdivision technology of drain holes and the modified node virtual flow method based on a whole model of the dam basin and underground power house. This model uses the secondary subdivision to simulate complex seepage control measures, such as densely distributed drainage holes, and calculates the exact solution at frozen points by considering the contribution of given nodes to the flow of transition elements. It adopts the method of enlarging transitional zone to determine the location of seepage free surface. Thus, this analytical method offers a convenient and accurate tool for the seepage problems with complicated seepage-control measures. This paper also discusses a technique of specifying groundwater boundary, which is useful for seepage control optimization of similar projects.

关 键 词：渗流力学 渗控措施 渗流数值模拟 抽水蓄能电站 二次剖分技术 结点虚流量法 

分 类 号：TV223.6[水利工程—水工结构工程]